Bath tub



FIG. 1 is a perspective view of the bath tub;

FIG. 2 is a top view of the bath tub;

FIG. 3 is a front elevational view of the bath tub;

FIG. 4 is a side elevational view of the bath tub; and,

FIG. 5 is a side elevational view of the bath tub.

The ornamental design for a bath tub, as shown.